/*
 * Copyright (c) 1999-2003, Carnegie Mellon University. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * 3. Products derived from the software may not be called "iVProg",
 *    nor may "iVProg" appear in their name, without prior written
 *    permission of Carnegie Mellon University.
 * 
 * 4. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes software developed by Carnegie Mellon University"
 */

package edu.cmu.cs.stage3.alice.core.question;

import edu.cmu.cs.stage3.alice.core.Question;
import edu.cmu.cs.stage3.alice.core.property.BooleanProperty;
import edu.cmu.cs.stage3.alice.core.property.NumberProperty;

public class RandomNumber extends Question {
 public final NumberProperty minimum = new NumberProperty( this, "minimum", new Double( 0 ) );
 public final NumberProperty maximum = new NumberProperty( this, "maximum", new Double( 1 ) );
 public final BooleanProperty integerOnly = new BooleanProperty( this, "integerOnly", Boolean.FALSE );
 //Rem @Override
 public Object getValue() {
  double minimumValue = minimum.doubleValue();
  double maximumValue = maximum.doubleValue();
  if( minimumValue > maximumValue ) {
   double temp = minimumValue;
   minimumValue = maximumValue;
   maximumValue = temp;
  }
  double r = Math.random();
  double value = r*(maximumValue-minimumValue) + minimumValue;
  if( integerOnly.booleanValue() ) {
   //todo: handle [min, max] as opposed to [ min, max )
   return new Integer( (int)value );
  } else {
   return new Double( value );
  }
 }
 //Rem @Override
 public Class getValueClass() {
  if( integerOnly.booleanValue() ) {
   return Integer.class;
  } else {
   return Number.class;
  }
 }
}
